Data type for coding of R data subtypes
SEXPTYPE.Rd
SEXPTYPE is an alias to an unsigned int. It is used to encode the type
of an R object that SEXPREC holds, namely in struct
sxpinfo_struct, where it works to declare the type of the struct
member type. To access the type of a SEXPREC you can use
TYPEOF.
Declaration
typedef unsigned int SEXPTYPE;
In Rinternals.h.
SEXPTYPEs and R objects
SEXPTYPE (int) | R object |
NILSXP (0) | The null object in R, see NULL. |
SYMSXP (1) | Names and symbols, see name. |
LISTSXP (2) | Lists of dotted pairs, see pairlist. |
CLOSXP (3) | Functions, see closure. |
ENVSXP (4) | Environments, see environment. |
PROMSXP (5) | Promises, see promise. |
LANGSXP (6) | Language objects are calls (including formulae), see call and formula. |
SPECIALSXP (7) | Special forms. |
BUILTINSXP (8) | Builtin non-special forms. |
CHARSXP (9) | "scalar" string type (internal only). |
LGLSXP (10) | Logical vectors, see logical. |
INTSXP (13) | Integer vectors, see integer. |
REALSXP (14) | Double vectors, see double. |
CPLXSXP (15) | Complex vectors, see complex. |
STRSXP (16) | Character vectors, see character. |
DOTSXP (17) | Dot-dot-dot object, dots. |
ANYSXP (18) | Make "any" args work. |
VECSXP (19) | Generic vectors, i.e. lists, see list. |
EXPRSXP (20) | Expressions vectors, see expression. |
BCODESXP (21) | Byte code. |
EXTPTRSXP (22) | External pointer. |
WEAKREFSXP (23) | Weak reference |
RAWSXP (24) | Raw bytes, see raw. |
S4SXP (25) | S4, non-vector, see S4 Introduction. |
NEWSXP (30) | Fresh node created in new page. |
FREESXP (31) | Node released by GC. |
FUNSXP (99) | Pseudo-type lumping closure, builtin and special. |
References
https://cran.r-project.org/doc/manuals/r-patched/R-ints.html#SEXPTYPEs